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Glaucoma: Overview01:25

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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
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Published on: May 25, 2020

Smell perception in normal tension glaucoma patients.

Maneli Mozaffarieh1, Daniela Hauenstein, Andreas Schoetzau

  • 1Department of Ophthalmology, University Hospital Basel, Basel, Switzerland.

Molecular Vision
|March 31, 2010
PubMed
Summary

Primary vascular dysregulation (PVD) significantly improves odor identification in both normal tension glaucoma patients and healthy individuals. This suggests PVD impacts olfactory function, independent of glaucoma status.

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Area of Science:

  • Ophthalmology
  • Neurology
  • Sensory Science

Background:

  • Olfactory dysfunction is increasingly recognized in various neurological conditions.
  • Primary vascular dysregulation (PVD) is a condition affecting blood flow regulation.
  • The relationship between PVD, glaucoma, and olfactory function requires further investigation.

Purpose of the Study:

  • To quantify and compare odor identification abilities in normal tension glaucoma (NTG) patients and healthy subjects.
  • To assess the influence of primary vascular dysregulation (PVD) on olfactory performance in these groups.
  • To determine if PVD affects odor identification independently of NTG.

Main Methods:

  • Utilized the "Sniffin' Sticks" 12-item odor identification test for objective smell assessment.
  • Included four groups: NTG with PVD, NTG without PVD, healthy with PVD, and healthy without PVD (18 subjects each).
  • Incorporated self-assessment of smell perception prior to the objective testing.

Main Results:

  • Subjects with PVD demonstrated significantly better odor identification scores compared to those without PVD (score difference = 2.64, p<0.001).
  • No significant difference in odor identification was observed between normal tension glaucoma patients and healthy subjects.
  • The positive impact of PVD on odor identification was consistent across both glaucoma and healthy cohorts.

Conclusions:

  • Primary vascular dysregulation (PVD) is associated with enhanced odor identification capabilities.
  • Odor identification performance is significantly influenced by the presence of PVD, irrespective of glaucoma diagnosis.
  • These findings highlight a potential link between vascular health and olfactory sensory function.